Double oil filters have a double layer of filter media to capture and hold particulate matter. Because oil flows through the smallest holes, the surface area is smaller, and the resulting blockage will lead to an oil bypass sooner than it should. While more pleats mean more surface area, too many will restrict oil flow and reduce capture efficiency. Therefore, it is imperative to choose an appropriate filter element for your vehicle. This article will discuss how to choose an appropriate double oil filter.


A double crude oil filter is available in two types: type A and type AS. The double type can be custom made to meet your specific needs. The second type of oil filter is used in the outlet of fuel oil separators. Its deep pleats can handle heavy amounts of oil without clogging. The first type of double crude oil filter is usually used for a light diesel pump. Its design is similar to that of a conventional crude oil filter.


A double oil filter is made with two barrels joined by a center tube. One has a large outside diameter and deep pleats, which provide maximum flow. While the media inside the filter appears to be small, the entire surface area is substantial, providing the engine with a high flow of oil. The second type is a bypass valve. The bypass valve has a spring-loaded steel base with a nitrile seal design. The second type has a metal-to-metal seal, which seats against the backplate.


A double oil filter can be a type A or AS filter. The latter type is the most common, and can be easily converted from one style to the other. These filters are often used in light diesel oil pumps, as well as fuel oil separator outlets. The Fram Extra Guard is another type of oil filter. Its design allows it to be converted from one type to another if you need it to work in an area that is not the same as a conventional filter.


The second type of double oil filter is made of steel. Its base plate has two threaded holes in the bottom. The inner filter has an external sealing device to prevent leakage. The base plate has a metal backplate with an internal oil filter. It is also connected to the engine via a threaded hole in the center. This provides protection against leaks, allowing the engine to run smoothly. It is important to ensure the filtration of the oil before installing a new double oil filter.


The double oil filter has a large outside diameter and deep pleats to increase flow. Although this type of oil filter appears to have a small amount of media, it has a huge surface area. Its bypass valve is located on the bottom of the filter, and it is made from nitrile rubber. It seats against the backplate with metal-to-metal pressure. If you are installing a new oil filter, it is best to check and tighten it properly before installing it.